Help Figuring Out ABGs!!!
- 0Jun 6, '07 by Luvelyonesince i am not working as a lpn this summer :angryfire , i decided to spend a few hours per week studying for my fall classes as i have heard my med/surg iv instructor fails the most people out of the program and gives a test on the first night of class.
i struggle figuring out abgs. i have to make a chart with ph, co2, hco3 (i think) and then try to figure out if it's respiratory or metabolic and then if it's alkalosis or acidosis. in the end, i always end up confused.
anyone know an easier way to figure this out and remember it?
- 0Jun 6, '07 by AnnaN5We haven't covered this yet in our nursing classes but in some of the study guides I have they have some help on how to memorize ABGs.
Remember "ROME"-Respiratory Opposite, Metabolic Equal
Increased pH, Decreased C02=Respiratory Alkalosis
Decreased pH, Increased C02=Respiratory Acidosis
Increased pH, Increased HC03=Metabolic Alkalosis
Decreased pH, Decreased HC03=Metabolic Acidosis
- 0Jun 6, '07 by Daytonitei thought allnurses had a sticky on the student forums with links for abg websites. i can't find one. check out this sticky on this forum: http://allnurses.com/forums/f205/pat...es-145201.html if i remember, there's information about acidosis and alkalosis on there.
here's some of the better abg and acid-base sites i have:
http://allnurses.com/forums/f50/abgs...on-156641.html - abgs and compensation thread
http://maagnursing.com/abg/ - this is an abg and acid/base balance tutorial. you do not have to register to go through the tutorial.
http://realnurseed.com/abg.htm - "abg's: it's all in the family"
http://www2.norwich.edu/mwalker/nr312/abg.htm - "interpretation of abgs: the battle of bicarb vs. carbon dioxide
http://www.the-abg-site.com/ - "the abg site". six easy steps to accurately interpret arterial blood gasses from ed4nurses.
http://web.indstate.edu/mary/abgdemo.html - an abg and abg analysis tutorial by a nursing instructor at indiana state university. http://www-isu.indstate.edu/mary/abgpract.htm - this is a quiz to test what you learned (includes answers).
http://www.rnceus.com/course_frame.a...directory=abgs - "interpretation of abgs: a four step method". from rnceus.com. discusses the authors four step method for interpreting abg values along with patient case studies and examples.
http://www.madsci.com/manu/indexgas.htm - blood gas basics from mad scientist software
http://instructors.butlercc.edu/nr20...abgs/abgs.html - abg tutorial from butler community college nursing program. includes questions and case scenarios. not sure if all answers to questions are on the site.
http://www.nurse-center.com/studentnurse/abgs.html - this is an abg review. it has 20 sets of abgs for you to interpret. the answers are at the bottom of the page.
http://www.acid-base.com/ - the home page of an interactive acid-base tutorial for medical students by professor alan grogono at tulane university, but there are things in it that are useful for nursing students. click on buttons throughout the presentation for more specific information. you might want to click on the "alphabetical index" at the left side to get a listing of the subjects covered on this site to save time. also, check out the "links" for more acid-base tutorial sites.
http://www.qldanaesthesia.com/acidbasebook/abindex.htm - the online edition of "acid-base physiology" by kerry brandis. there is a lot of information on acid-base balance here and includes information on respiratory and metabolic acidosis and alkalosis. there are short tutorials on the compensation, correction, assessment and prevention of each of these conditions.
- 0Jun 6, '07 by GilaRRTI split the values up.
First, I look at the PH. Is it high or low? Alkalosis versus Acidoses.
Then, I look at the other values to find the cause of the acidosis or alkalosis.
C02: High or low
Bicarb: High or low
P02: High or low
Finally, I look at the base deficit/base excess value to help confirm my assessment.
-3 and lower (ie -4,-5, -6, etc): metabolic acidosis in nature
+3 and higher (ie 4,5,6, etc) metabolic alkalosis in nature